Work

κ-Carrageenan–Sodium Alginate Beads and Superabsorbent Coated Nitrogen Fertilizer with Slow-Release, Water-Retention, and Anticompaction Properties

Year: 2011

Type: article

Abstract: A multifunctional slow-release nitrogen fertilizer (SRNF) has been developed to improve fertilizer use efficiency and reduce environmental pollution. κ-Carrageenan–sodium alginate (κC–SA) and cross-linked κC- g -poly(acrylic acid)/Celite superabsorbent were used as inner and outer coating materials, which were coated consecutively on the granule core urea in a pan granulator. Elemental analysis result showed that the product contained 22.6% nitrogen. The water evaporation as well as the nitrogen release behavior of SRNF in soil was explored. In addition, the coated urea had a higher average crushing strength in comparison with uncoated urea. Furthermore, the incorporation of SRNF in soil could effectively prevent the compaction of soil. These studies showed that the product prepared by a simple route with good slow-release and water-retention properties may be expected to have wide potential applications in modern agriculture and horticulture.

Source: Industrial & Engineering Chemistry Research

DOI: 10.1021/ie2020526

Authors: Yanfang Wang, Mingzhu Liu, Boli Ni, Lihua Xie

Institutions: State Key Laboratory of Applied Organic Chemistry, Lanzhou University

Language: English

Topic: Polymer-Based Agricultural Enhancements

Subfield: Agronomy and Crop Science

Field: Agricultural and Biological Sciences

Domain: Life Sciences

SDGs: Zero hunger, Responsible consumption and production

Open Access status: green

Funder: Ministry of Education of the People's Republic of China